Deadlift 1RM from 140 kg for 3 reps

Q: How much could I deadlift for one if I pull 140 kg for 3?

On the deadlift, 140 kg for 3 reps gives an estimated 1RM of 154.0 kg with Epley. At so few reps the two formulas nearly agree, so it is a fairly tight estimate.

Q: Why use low reps to estimate the deadlift?

On the deadlift, 140 kg for 3 reps gives an estimated 1RM of 154.0 kg with Epley. Because at 8 or 10 reps grip and technique break before strength does, and the formula over- or underestimates depending on the day.

By Jesús Narváez Tamés · Published on October 28, 2026

Your estimated deadlift max from a set of 140 kg for 3 reps, the most reliable way to estimate it without grinding to failure.

154.0kg

Brzycki: 148.2 kg

Exercise: Deadlift
Weight lifted: 140 kg
Reps: 3
Formula: Epley
90% of 1RM: 138.6 kg
80% of 1RM: 123.2 kg
70% of 1RM: 107.8 kg

On the deadlift, long sets change technique a lot: the back rounds and grip fails before the legs do. That is why this example is a short set, 140 kg for 3 reps, which predicts the max best.

At 3 reps Epley and Brzycki almost match, so the figure is stable. If you want to test it, warm up to 90% of the estimate and take one or two attempts, no more. A missed max with a rounded back is not data worth having.

How this was calculated

Epley: 1RM = weight × (1 + reps / 30). It is an estimate, reliable up to about 10 reps taken close to failure. Brzycki (weight × 36 / (37 − reps)) is shown for contrast: if the two drift apart, the set had more reps than the formula handles well.

Nearby values

The same calculation changing only the weight. The highlighted row is this example.

Weight	Result
130 kg	143.0 kg	Brzycki: 137.6 kg
135 kg	148.5 kg	Brzycki: 142.9 kg
140 kg	154.0 kg	Brzycki: 148.2 kg
145 kg	159.5 kg	Brzycki: 153.5 kg
150 kg	165.0 kg	Brzycki: 158.8 kg

Adjust it to your numbers

The calculator starts from this example. If you change a field, that value is saved only on this device.

Units

Weight lifted (lb)

Reps performed

Formula

Estimated 1RM

339.5lb

Percentage table

1 reps
100 %
339.5 lb
2 reps
95 %
318.3 lb
3 reps
92 %
308.6 lb
4 reps
89 %
299.6 lb
5 reps
86 %
291.0 lb
6 reps
83 %
282.9 lb
8 reps
78 %
268.0 lb
10 reps
75 %
254.6 lb
12 reps
70 %
242.5 lb

Max (1-2 reps) (≥90%) Strength (3-5 reps) (80-89%) Hypertrophy (6-12 reps) (70-79%) Volume (60-69%) Endurance (<60%)

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Disclaimer: this calculator provides educational information and estimates based on standard formulas. It is not a substitute for personalised advice from a doctor, nutritionist or trainer. Consult a professional before making significant changes to your diet or training.

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Frequently asked questions

How much could I deadlift for one if I pull 140 kg for 3?+

On the deadlift, 140 kg for 3 reps gives an estimated 1RM of 154.0 kg with Epley. At so few reps the two formulas nearly agree, so it is a fairly tight estimate.

Why use low reps to estimate the deadlift?+

On the deadlift, 140 kg for 3 reps gives an estimated 1RM of 154.0 kg with Epley. Because at 8 or 10 reps grip and technique break before strength does, and the formula over- or underestimates depending on the day.

Worked examples

A specific profile, with the number already done. Open it if it looks like you, then adjust.